XLibre/xf86-video-ast
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use same search mode criteria with ast drm driver

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This commit is contained in:
Y.C. Chen
2015-08-13 15:21:57 +08:00
parent 4f404aa29e
commit 77e7ac37c6
2 changed files with 40 additions and 27 deletions
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51
src/ast_mode.c
View File

@@ -495,6 +495,8 @@ static Bool bGetAST1000VGAModeInfo(ScrnInfoPtr pScrn, DisplayModePtr mode, PVBIO
ASTRecPtr pAST;
ULONG ulModeID, ulColorIndex, ulRefreshRate, ulRefreshRateIndex = 0;
ULONG ulHBorder, ulVBorder;
Bool check_sync;
PVBIOS_ENHTABLE_STRUCT loop, best = NULL;
pAST = ASTPTR(pScrn);
@@ -560,27 +562,34 @@ static Bool bGetAST1000VGAModeInfo(ScrnInfoPtr pScrn, DisplayModePtr mode, PVBIO
}
/* Get Proper Mode Index */
if (pVGAModeInfo->pEnhTableEntry->Flags & WideScreenMode)
{
/* parsing for wide screen reduced blank mode */
if ((mode->Flags & V_NVSYNC) && (mode->Flags & V_PHSYNC)) /* CVT RB */
pVGAModeInfo->pEnhTableEntry++;
}
else
{
ulRefreshRate = (mode->Clock * 1000) / (mode->HTotal * mode->VTotal);
while (pVGAModeInfo->pEnhTableEntry->ulRefreshRate < ulRefreshRate)
{
pVGAModeInfo->pEnhTableEntry++;
if ((pVGAModeInfo->pEnhTableEntry->ulRefreshRate > ulRefreshRate) ||
(pVGAModeInfo->pEnhTableEntry->ulRefreshRate == 0xFF))
{
pVGAModeInfo->pEnhTableEntry--;
break;
}
}
}
ulRefreshRate = (mode->Clock * 1000) / (mode->HTotal * mode->VTotal) + 1;
loop = pVGAModeInfo->pEnhTableEntry;
check_sync = loop->Flags & WideScreenMode;
do {
while (loop->ulRefreshRate != 0xff) {
if ((check_sync) &&
(((mode->Flags & V_NVSYNC) &&
(loop->Flags & PVSync)) ||
((mode->Flags & V_PVSYNC) &&
(loop->Flags & NVSync)) ||
((mode->Flags & V_NHSYNC) &&
(loop->Flags & PHSync)) ||
((mode->Flags & V_PHSYNC) &&
(loop->Flags & NHSync)))) {
loop++;
continue;
}
if (loop->ulRefreshRate <= ulRefreshRate
&& (!best || loop->ulRefreshRate > best->ulRefreshRate))
best = loop;
loop++;
}
if (best || !check_sync)
break;
check_sync = 0;
} while (1);
if (best)
pVGAModeInfo->pEnhTableEntry = best;
/* Update mode CRTC info */
ulHBorder = (pVGAModeInfo->pEnhTableEntry->Flags & HBorder) ? 8:0;

16
src/ast_mode.h
View File

@@ -66,14 +66,18 @@
#define HalfDCLK 0x00000002
#define DoubleScanMode 0x00000004
#define LineCompareOff 0x00000008
#define SyncPP 0x00000000
#define SyncPN 0x00000040
#define SyncNP 0x00000080
#define SyncNN 0x000000C0
#define HBorder 0x00000020
#define VBorder 0x00000010
#define WideScreenMode 0x00000100
#define NewModeInfo 0x00000200
#define WideScreenMode 0x00000100
#define NewModeInfo 0x00000200
#define NHSync 0x00000400
#define PHSync 0x00000800
#define NVSync 0x00001000
#define PVSync 0x00002000
#define SyncPP (PVSync | PHSync)
#define SyncPN (PVSync | NHSync)
#define SyncNP (NVSync | PHSync)
#define SyncNN (NVSync | NHSync)
/* DAC Definition */
#define DAC_NUM_TEXT 64